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authorMarc Zyngier <marc.zyngier@arm.com>2015-10-13 12:51:36 +0100
committerThomas Gleixner <tglx@linutronix.de>2015-10-13 19:01:24 +0200
commitb145dcc45a6af0abfcf9b4de8006d40559c50fc6 (patch)
tree600837009a829d173619fed1e3ffff87f45689c7 /include/linux/irqdomain.h
parent1bf4ddc46c5d6123897a54cea4ffe3e90f30600b (diff)
irqdomain: Add a fwnode_handle allocator
In order to be able to reference an irqdomain from ACPI, we need to be able to create an identifier, which is usually a struct device_node. This device node does't really fit the ACPI infrastructure, so we cunningly allocate a new structure containing a fwnode_handle, and return that. This structure doesn't really point to a device (interrupt controllers are not "real" devices in Linux), but as we cannot really deny that they exist, we create them with a new fwnode_type (FWNODE_IRQCHIP). Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-and-tested-by: Hanjun Guo <hanjun.guo@linaro.org> Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: <linux-arm-kernel@lists.infradead.org> Cc: Tomasz Nowicki <tomasz.nowicki@linaro.org> Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> Cc: Graeme Gregory <graeme@xora.org.uk> Cc: Jake Oshins <jakeo@microsoft.com> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Link: http://lkml.kernel.org/r/1444737105-31573-9-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/irqdomain.h')
-rw-r--r--include/linux/irqdomain.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index 995d4c5100d3..949caa728758 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -188,6 +188,8 @@ static inline struct device_node *irq_domain_get_of_node(struct irq_domain *d)
}
#ifdef CONFIG_IRQ_DOMAIN
+struct fwnode_handle *irq_domain_alloc_fwnode(void *data);
+void irq_domain_free_fwnode(struct fwnode_handle *fwnode);
struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, int size,
irq_hw_number_t hwirq_max, int direct_max,
const struct irq_domain_ops *ops,